Home / 121,547.40-182,321.10-51,417.60

Finding the Fourth Proportional to 121,547.40, 182,321.10 and 51,417.60

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Solution

The fourth proportional to 121,547.40, 182,321.10 and 51,417.60 is: 77,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,547.40 : 182,321.10 = 51,417.60 : x
  2. Step 2: Convert to fraction form
    121,547.40/182,321.10 = 51,417.60/x
  3. Step 3: Cross multiply
    121,547.40x = 182,321.10 × 51,417.60
  4. Step 4: Simplify right side
    121,547.40x = 9,374,513,391.36
  5. Step 5: Solve for x
    x = 9,374,513,391.36/121,547.40
  6. Step 6: Final answer
    x = 77,126.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.